Periodic mesoporous organosilicas with organic groups inside the channel walls

Article Abstract:

It has been possible to identify a periodic mesoporous organosilica containing bridge-bonded ethene groups directly integrated into the silica framework. The surfactant templates were solvent-extracted and ion-exchanged to form a stable and periodic mesoporous ethenesilica with high surface area and ethene groups that are easily accessible for chemical reaction. The periodic mesoporous organosilicas, containing organic groups inside the walls of mesoporous silica, were compared with mesoporous silica containing tethered vinyl groups inside the channels.

Research, Organosilicon compounds

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Free-standing and oriented mesoporous silica films grown at the air-water interface

Article Abstract:

Oriented and free-standing thin mesoporous silica films are produced by the deposition of silica-surfactant micellar molecules on a surfactant overstructure at the air-water interface. The silicates polymerize and interact with the surfactant overstructure and micellar aggregates. Channels in the films are hexagonal and are oriented parallel to the water-air interface. The root-mean-square surface roughness is 3 angstroms for the continuous films. They are resistant to bending but can be transferred to substrates of various shapes.

Usage, Design and construction, Observations, Thin films, Surface active agents, Silicates

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